@charset "UTF-8";
body {
  font-family: myriad-pro, sans-serif;
  font-weight: 300;
  font-style: normal;
  font-size: 16px;
  line-height: 1.5;
  color: #000;
}

a {
  color: #000;
  text-decoration-line: none;
}

a:hover {
  opacity: 0.5;
}

ul li {
  list-style: none;
}

/***********************/
/*　　　メニュー    
/***********************/
nav {
  display: block;
  position: fixed;
  top: 0;
  left: -300px;
  bottom: 0;
  width: 300px;
  background: #ffffff;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transition: all 0.5s;
  z-index: 3;
  opacity: 0;
}
nav .inner {
  padding: 25px;
}
nav .inner .site-name {
  margin-left: 0;
}
nav .inner .site-name img {
  width: 70%;
}
nav .inner ul {
  list-style: none;
  margin: 0 0 50px 0;
  padding: 0;
}
nav .inner ul li {
  position: relative;
  margin: 0;
  border-bottom: 1px solid #333;
}
nav .inner ul li a {
  display: block;
  color: #333;
  font-size: 14px;
  padding: 1em;
  text-decoration: none;
  transition-duration: 0.2s;
}
nav .inner ul li a:hover {
  background: #e4e4e4;
}

.open nav {
  left: 0;
  opacity: 1;
}

@media screen and (max-width: 767px) {
  nav {
    left: -250px;
    width: 250px;
  }
}
.toggle_btn {
  display: block;
  position: fixed;
  width: 30px;
  height: 30px;
  top: 30px;
  right: 30px;
  transition: all 0.5s;
  cursor: pointer;
  z-index: 3;
}
.toggle_btn span {
  display: block;
  position: absolute;
  width: 30px;
  height: 2px;
  left: 0;
  background-color: #000;
  border-radius: 4px;
  transition: all 0.5s;
}
.toggle_btn span:nth-child(1) {
  top: 4px;
}
.toggle_btn span:nth-child(2) {
  top: 14px;
}
.toggle_btn span:nth-child(3) {
  bottom: 4px;
}

.open .toggle_btn span {
  background-color: #fff;
}
.open .toggle_btn span:nth-child(1) {
  transform: translateY(10px) rotate(-315deg);
}
.open .toggle_btn span:nth-child(2) {
  opacity: 0;
}
.open .toggle_btn span:nth-child(3) {
  transform: translateY(-10px) rotate(315deg);
}

#mask {
  display: none;
  transition: all 0.5s;
}

.open #mask {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: 0.8;
  z-index: 2;
  cursor: pointer;
}

/***********************/
/*　　　共通クラス    
/***********************/
@media screen and (max-width: 480px) {
  .pc {
    display: none;
  }
}
@media screen and (min-width: 481px) {
  .sp {
    display: none;
  }
}
.container {
  width: 980px;
  margin: 0 auto;
}
.container article {
  margin: 20px 0;
}

.flexbox {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}

.content {
  padding: 25px 0;
}

@media screen and (max-width: 480px) {
  .content {
    padding-bottom: 0;
  }
}
.sec-ttl {
  color: #000;
  position: relative;
  text-align: center;
  font-size: 2em;
}

.sec-ttl::before {
  position: absolute;
  width: 10%;
  left: 45%;
  bottom: 0;
  content: "";
  border-bottom: 2px solid #000;
}

@media screen and (max-width: 480px) {
  .sec-ttl {
    font-size: 1.6em;
  }
}
.more-btn {
  max-width: 100%;
  text-align: center;
  position: relative;
  margin: auto;
  margin-bottom: 20px;
}
.more-btn a {
  display: inline-block;
  position: relative;
  background: transparent;
  border-width: 2px;
  border-style: solid;
  margin: 1em;
  padding: 0.5em 1em;
  transition: all 0.3s ease-in-out;
  text-align: center;
  font-weight: bold;
  background-color: #dfdf54;
}
.more-btn a:before, .more-btn a:after {
  content: "";
  display: block;
  position: absolute;
  box-sizing: border-box;
  border-style: solid;
  width: 1em;
  height: 1em;
  transition: all 0.3s ease-in-out;
}
.more-btn a:before {
  top: -6px;
  left: -6px;
  border-width: 2px 0 0 2px;
  z-index: 0;
}
.more-btn a:after {
  bottom: -6px;
  right: -6px;
  border-width: 0 2px 2px 0;
}
.more-btn a:hover:before, .more-btn a:hover:after {
  width: calc(100% + 12px);
  height: calc(100% + 12px);
}